Dataset: Aleutian Islands Benthic Production: PAR
Deployment: OC1606A

Estimates of benthic primary production and respiration in kelp forests and urchin barrens

Principal Investigator:

Matthew Edwards (San Diego State University, SDSU)

Co-Principal Investigator:

Brenda Konar (University of Alaska Fairbanks, UAF)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative Research: Changes in ecosystem production and benthic biodiversity following the widespread loss of an ecosystem engineer (Kelp Forest Ecosystem Engineer Loss)

Current State:

Final no updates expected

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/755888/data

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Description

Estimates of benthic primary production and respiration in kelp forests and urchin barrens in the Aleutian Archipelago, Alaska (Attu, Nizki, Kiska, Atka, Adak, Chuginadak, Tanaga, Amchitka, Yunaska, Unmak, and Unalaska).

Methods & Sampling

Dataset acquisition description

We deployed 3 benthic chambers in each of three habitats (kelp forests, urchin barrens, and transition zones) at each of 10 islands in the Aleutian Archipelago. Each chamber was equipped with a data logger for dissolved oxygen (PME Minidot) and light (Odyssey PAR) and were left on the benthos for 36 hours. These data are hourly totals for light irradiance data for each habitat type at each island.

Data were collected each minute while deployed. Data were ultimately summed for each hour. Data are presented in different tabs for each island.

Data Processing Description

Dataset Processing Description

We used MS Excel and R-Studio to summarize and QA the data.

BCO-DMO Processing:
- inserted latitude and longitude for each site;
- added column with date formatted as yyyymmdd for clarity;
- added date to Nizki site.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1435194	NSF Division of Ocean Sciences

Instruments

Oxygen Sensor

Supplied Name: PME Minidot Oxygen loggers

Supplied Description:

Instrument Type

Generic Name: Oxygen Sensor

Acronym: Dissolved Oxygen Sensor

Generic Description:

An electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed

Photosynthetically Available Radiation Sensor

Supplied Name: Odyssey PAR Logger

Supplied Description:

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Island	Island name	unitless	site
lat	Latitude of measurement; positive values = North	decimal degrees	lat
lon	Longitude of measurement; positive values = East	decimal degrees	lon
Date	Date; format: dd/mm/yyyy	unitless	date
Time	Time of day; 24-hr clock; format: HH:MM:SS	unitless	time
Sensor_num	Sensor number	unitless	instrument
Serial	Sensor serial number	unitless	instrument
Habitat	Habitat type	unitless	site_descrip
umol_photon_m2_hour	Irrandiance measurement	micromoles photons per square meter per hour (umol photons/m2/hr)	irradiance
Date_yyyymmdd	Date formatted as yyyymmdd	unitless	date

Database

Contribute Data

Dataset: Aleutian Islands Benthic Production: PAR
Deployment: OC1606A

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Aleutian Islands Benthic Production: PARDeployment: OC1606A

Dataset acquisition description

Dataset Processing Description

Dataset: Aleutian Islands Benthic Production: PAR
Deployment: OC1606A